romney will be introduced first. both wives playing the role of debate partner. mrs. romney telling cnn it's been her most important role during the campaign. >> it's a cute thing that he does, almost after every answer. he finds me in the audience. the first thing he does on stage, he takes off his watch, he puts it on the podium. but then he writes "dad." >> reporter: romney's father, who also ran for president. and the first lady acknowledging her own nerves. >> i get so nervous at these debates, and, i'm like one of those parents watching their kid on the balance beam. you just are standing there, trying not to, you know, have any expression at all. >> reporter: advice that comes on the same day they mark something else. >> this is from me to you, honey, happy 20th anniversary. >> reporter: they will likely mark their anniversary with a private dinner after the e the bait tonight. sasha and malia back in washington, they have school tomorrow. several of the romney boys will be here. and we took this image today, tweeted it out. look at this. the debate prep you do